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Finding the Fourth Proportional to 70,480,009.20, 105,580,045.80 and 62,063,266.80

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Solution

The fourth proportional to 70,480,009.20, 105,580,045.80 and 62,063,266.80 is: 92,971,647.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,480,009.20 : 105,580,045.80 = 62,063,266.80 : x
  2. Step 2: Convert to fraction form
    70,480,009.20/105,580,045.80 = 62,063,266.80/x
  3. Step 3: Cross multiply
    70,480,009.20x = 105,580,045.80 × 62,063,266.80
  4. Step 4: Simplify right side
    70,480,009.20x = 6,552,642,551,241,619
  5. Step 5: Solve for x
    x = 6,552,642,551,241,619/70,480,009.20
  6. Step 6: Final answer
    x = 92,971,647.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.